2,177 results match your criteria: "University of Colorado Department of Neurosurgery; and.[Affiliation]"

Reassessment of Plurihormonal Pituitary Adenomas/PitNETs.

Am J Surg Pathol

September 2024

Division of Endocrinology, Metabolism and Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO.

Plurihormonal pituitary adenomas/neuroendocrine tumors express multiple pituitary hormones and/or transcription factors, as determined by immunohistochemistry (IHC). Three types exist based on Endocrine WHO 2022 classification: mature plurihormonal PIT1 (pituitary-specific POU-class homeodomain factor-1), immature PIT1-lineage tumors, and a third type with unusual combinations of pituitary hormones and/or transcription factors. However, since then, "somatogonatotroph"/"multilineage" tumors with PIT1/SF1 (steroidogenic factor 1) co-expression have been described, possibly confounding this classification.

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Article Synopsis
  • Down syndrome (DS) individuals commonly develop Alzheimer's disease (AD) by age 50, and this study investigates the early AD pathology in the locus coeruleus (LC) pertaining to both DS-AD and sporadic AD.* -
  • The research involved analyzing postmortem human tissue samples from 36 cases (including controls, DS-AD, and AD) to identify differences in the levels of tau and amyloid-β, revealing significantly higher levels of oligomeric tau and Aβ in DS-AD compared to other AD cases.* -
  • The findings suggest that DS-AD shows unique pathological features, similar to early-onset AD, which could help inform future research on the mechanisms driving AD progression in
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Purpose: To report patient outcomes and local tumor control rates in a cohort of patients with biopsy-proven HER-2 positive breast cancer treated with stereotactic radiosurgery (SRS) for brain metastases (BM).

Methods: This international, retrospective, multicenter study, included 195 female patients with 1706 SRS-treated BM. Radiologic and clinical outcomes after SRS were determined and prognostic factors identified.

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Editorial: Women in molecular mechanisms of aging.

Front Aging

August 2024

MiniAging Research Group, Department of Physiology, Faculty of Medicine, University of Valencia, Valencia, Spain.

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Alexithymia Prevalence, Characterization, and Associations With Emotional Functioning and Life Satisfaction: A Traumatic Brain Injury Model System Study.

J Head Trauma Rehabil

August 2024

Author Affiliations: Department of Neurosurgery and Brain Repair, University of South Florida, Tampa, Florida (Dr Neumann) Department of Physical Medicine and Rehabilitation (Dr Hammond), Indiana University School of Medicine, Indianapolis, Indiana; H. Ben Taub Department of Physical Medicine and Rehabilitation (Dr Sander), Baylor College of Medicine, Houston, Texas; Brain Injury Research Center (Dr Sander), TIRR Memorial Hermann, Houston, Texas; Department of Physical Medicine and Rehabilitation (Dr Bogner), College of Medicine, The Ohio State University, Columbus, Ohio; Rusk Rehabilitation (Dr Bushnik), NYU Langone Health, New York, New York; Rehabilitation & Extended Care (Dr Finn), Minneapolis VA Health Care System, Minneapolis, Minnesota; Department of Psychiatry & Behavioral Sciences (Dr Finn), University of Minnesota-Twin Cities, Minneapolis, Minnesota; Polytrauma System of Care, Rehabilitation Service (Dr Chung), VA Palo Alto Health Care System, Palo Alto, California; Central Virginia VA Health Care System (Dr Klyce), Richmond, Virginia; Virginia Commonwealth University Health System (Dr Klyce), Richmond, Virginia; Sheltering Arms Institute (Dr Klyce), Richmond, Virginia; and Craig Hospital (Mr Sevigny and Dr Ketchum), Traumatic Brain Injury Model Systems, National Data and Statistical Center, Englewood, Colorado.

Article Synopsis
  • Study aimed to assess alexithymia prevalence in individuals with moderate-to-severe TBI one year post-injury, explore related demographic and injury factors, and analyze its links to emotional functioning and life satisfaction.
  • Among 196 participants, 14.3% had high levels of alexithymia, with tendencies observed for lower education levels in this group.
  • High alexithymia scores were linked to significant emotional dysregulation and post-traumatic stress, and moderately related to other negative emotional states and lower life satisfaction.
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Introduction: Penttinen premature aging syndrome is caused by mutations in the PDGFRB gene. We describe the case of a 10-year-old girl with a de novo c.1994T>C variant in PDGFRB who developed multiple cranial, intracranial, and spinal manifestations, including macrocephaly, enlarged convexity subarachnoid spaces crossed by numerous vascularized arachnoid trabecule, hydrocephalus, spinal epidural lipomatosis, a low conus medullaris, calvarial thinning with large anterior fontanelle, and a skull fracture with bilateral epidural hematomas.

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Objective: To identify distinct clinical or imaging subtypes of spontaneous intracranial hypotension (SIH) due to spinal cerebrospinal fluid (CSF) venous fistula (CVF).

Background: Spontaneous intracranial hypotension is classically understood to present clinically with an orthostatic headache and stereotyped brain magnetic resonance imaging (MRI) findings; however, most prior literature examining clinical and brain MRI features of SIH has focused on all types of spinal CSF leaks concurrently. This study aimed to evaluate whether data support the possibility of internally consistent subtypes based on brain imaging features and clinical symptoms analogous to those seen in primary headache syndromes.

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Recurrent adamantinomatous craniopharyngiomas show MAPK pathway activation, clonal evolution and rare TP53-loss-mediated malignant progression.

Acta Neuropathol Commun

August 2024

Developmental Biology and Cancer Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, University College London, London, UK.

The two types of craniopharyngioma, adamantinomatous (ACP) and papillary (PCP), are clinically relevant tumours in children and adults. Although the biology of primary craniopharyngioma is starting to be unravelled, little is known about the biology of recurrence. To fill this gap in knowledge, we have analysed through methylation array, RNA sequencing and pERK1/2 immunohistochemistry a cohort of paired primary and recurrent samples (32 samples from 14 cases of ACP and 4 cases of PCP).

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: The rising prevalence of musculoskeletal (MSK) conditions has not been balanced by a sufficient increase in healthcare providers. Scalability challenges are being addressed through the use of artificial intelligence (AI) in some healthcare sectors, with this showing potential to also improve MSK care. Digital care programs (DCP) generate automatically collected data, thus making them ideal candidates for AI implementation into workflows, with the potential to unlock care scalability.

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Oscillatory activity within the beta frequency range (13-30 Hz) serves as a Parkinson's disease biomarker for tailoring deep brain stimulation (DBS) treatments. Currently, identifying clinically relevant beta signals, specifically frequencies of peak amplitudes within the beta spectral band, is a subjective process. To inform potential strategies for objective clinical decision making, we assessed algorithms for identifying beta peaks and devised a standardized approach for both research and clinical applications.

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Objectives: Describe a single institution's cochlear implant outcomes for patients with inner ear schwannomas (IES) in the setting of various tumor management strategies (observation, surgical resection, or stereotactic radiosurgery [SRS]).

Study Design: Single-institution retrospective review.

Patients: Patients diagnosed with isolated, sporadic IES who underwent cochlear implantation (CI).

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Importance: Climate change is a fundamental threat to human health, and industries, including health care, must assess their respective contribution to this crisis.

Objective: To assess the change in knowledge of clinicians who completed a quality incentive program (QIP) measure on climate change and health care sustainability and to examine clinician attitudes toward climate change and their perception of clinical and individual relevance.

Design, Setting, And Participants: The participants in this survey study included employed physicians and psychologists who were part of a hospital physician organization in an academic medical center (AMC) in Boston, Massachusetts.

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Background: Free-living amoebae rarely instigate intracranial infections that may resemble neoplastic conditions on imaging. precipitates an acute, swiftly fatal meningoencephalitis, whereas and species typically manifest with a less aggressive onset but carry equally dire consequences.

Case Description: The case describes a 33-year-old woman with subacute encephalitis caused by .

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Article Synopsis
  • Sequence-based genetic testing finds causative variants in about 50% of cases of developmental and epileptic encephalopathies (DEEs), but DNA methylation changes in these cases have not been thoroughly explored.
  • This study analyzed genome-wide DNA methylation in blood samples from 582 individuals with unresolved DEEs, identifying rare methylation patterns and potential genetic causes in 12 of these cases.
  • The research highlights the effectiveness of DNA methylation analysis in diagnosing DEEs, showing a 2% diagnostic yield, and provides insights into the CHD2 gene's pathophysiology using advanced sequencing methods.
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Spinal cord injury leads to hyperexcitability and dysfunction in spinal sensory processing. As hyperexcitable circuits can become epileptiform, we explored whether such activity emerges in a thoracic spinal cord injury (SCI) contusion model of neuropathic pain. Recordings from spinal sensory axons in multiple below-lesion segmental dorsal roots demonstrated that SCI facilitated the emergence of spontaneous ectopic burst spiking in afferent axons, which were correlated across multiple adjacent dorsal roots.

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Background: Early medical attention after concussion may minimize symptom duration and burden; however, many concussions are undiagnosed or have a delay in diagnosis after injury. Many concussion symptoms (eg, headache, dizziness) are not visible, meaning that early identification is often contingent on individuals reporting their injury to medical staff. A fundamental understanding of the types and levels of factors that explain when concussions are reported can help identify promising directions for intervention.

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Diagnosis and management of blunt cerebrovascular injuries: What you need to know.

J Trauma Acute Care Surg

January 2025

From the Division of Trauma/Acute Care Surgery (W.L.B.), Scripps Clinic/Scripps Clinic Medical Group, La Jolla, California Department of Surgery/Trauma (E.E.M.), Ernest E. Moore Shock Trauma Center at Denver Health, University of Colorado Denver, Denver, Colorado; Division of Neuroradiology, Department of Radiology (A.P.K.), Santa Clara Valley Medical Center, San Jose, California; Section of Neurosurgery and Neurointerventional Radiology (B.C.C.R.F.), Scripps Memorial Hospital La Jolla; and Division of Vascular Surgery (J.S.W.), Scripps Clinic/Scripps Clinic Medical Group, La Jolla, California.

Blunt cerebrovascular injuries are not as rare as they were once thought to be-but they still have the same potential for disastrous outcomes. They may occur following any trauma, but more common with higher energy transfer mechanisms. If stroke occurs, prompt recognition and treatment offers the best chance for optimal outcome.

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Background: The amygdala is highly implicated in an array of psychiatric disorders but is not accessible using currently available noninvasive neuromodulatory techniques. Low-intensity transcranial focused ultrasound (TFUS) is a neuromodulatory technique that has the capability of reaching subcortical regions noninvasively.

Methods: We studied healthy older adult participants ( = 21, ages 48-79 years) who received TFUS targeting the right amygdala and left entorhinal cortex (active control region) using a 2-visit within-participant crossover design.

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Serial Diffusion Tensor Imaging and Rate of Ventricular Blood Clearance in Patients with Intraventricular Hemorrhage.

Neurocrit Care

July 2024

Institute for Stroke and Cerebrovascular Diseases and Department of Neurology, McGovern Medical School, The University of Texas Health Science Center at Houston, 6431 Fannin Street, Houston, TX, USA.

Background: We developed a noninvasive biomarker to quantify the rate of ventricular blood clearance in patients with intracerebral hemorrhage and extension to the ventricles-intraventricular hemorrhage.

Methods: We performed magnetic resonance imaging in 26 patients at 1, 14, 28, and 42 days of onset and measured their hematoma volume (HV), ventricular blood volume (VBV), and two diffusion metrics: fractional anisotropy (FA), and mean diffusivity (MD). The ipasilesional ventricular cerebral spinal fluid's FA and MD were associated with VBV and stroke severity scores (National Institute of Health Stroke Scale [NIHSS]).

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Article Synopsis
  • Osteolytic lesions in the spine can lead to instability, and different surgical methods aim to restore stability, but their biomechanical impacts are not well understood.
  • The study assessed the biomechanical effects of three surgical techniques for treating a T12 osteolytic lesion using finite element analysis, simulating real human spinal conditions.
  • Results showed that Model A had the least stress on the material but higher stress on instrumented vertebrae, while Model B was rigid with lower construct stress, and Model C had the lowest vertebral body stress but the highest screw pull-out stress, offering important insights for surgical decision-making.
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Background: Cancer initiation, progression, and immune evasion depend on the tumor microenvironment (TME). Thus, understanding the TME immune architecture is essential for understanding tumor metastasis and therapy response. This study aimed to create an immune cell states (CSs) atlas using bulk RNA-seq data enriched by eco-type analyses to resolve the complex immune architectures in the TME.

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Substance use disorders are prevalent, causing extensive morbidity and mortality worldwide. Evidence-based treatments are of low to moderate effect size. Growth in the neurobiological understanding of addiction (e.

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Purpose: Newer-generation tyrosine kinase inhibitors (TKIs) for non-small cell lung cancer (NSCLC) with epidermal growth factor receptor () mutations and anaplastic lymphoma kinase () rearrangements have demonstrated high CNS activity. The optimal use of up-front stereotactic radiosurgery (SRS) for brain metastases (BM) in patients eligible for CNS-penetrant TKIs is controversial, and data to guide patient management are limited.

Materials And Methods: Data on TKI-naïve patients with EGFR- and ALK-driven NSCLC with BM treated with CNS-penetrant TKIs with and without up-front SRS were retrospectively collected from seven academic centers in the United States.

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